12920473 has 4 divisors (see below), whose sum is σ = 12985600. Its totient is φ = 12855348.

The previous prime is 12920461. The next prime is 12920483. The reversal of 12920473 is 37402921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12920473 - 2¹³ = 12912281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12920443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32265 + ... + 32662.

It is an arithmetic number, because the mean of its divisors is an integer number (3246400).

Almost surely, 2^12920473 is an apocalyptic number.

It is an amenable number.

12920473 is a deficient number, since it is larger than the sum of its proper divisors (65127).

12920473 is an equidigital number, since it uses as much as digits as its factorization.

12920473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65126.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12920473 is about 3594.5059465801. The cubic root of 12920473 is about 234.6530143985.

It can be divided in two parts, 129 and 20473, that added together give a palindrome (20602).

The spelling of 12920473 in words is "twelve million, nine hundred twenty thousand, four hundred seventy-three".